<template>
  <div>
    <ul>
      <li v-for="item in myArr" :key="item">{{ item }}</li>
    </ul>
    <button @click="btn">走一走</button>
  </div>
</template>

<script>
export default {
  data () {
    return {
      myArr: ['帅哥', '美女', '程序猿']
    }
  },

  created () {

  },

  methods: {
    btn () {
      this.myArr.push(this.myArr[0])

      this.myArr.shift()
    }
  }
}
</script>

<style scoped lang='less'>

</style>
